Nipple on top of Crank case

[FASST37]

It says connnector, suction on the parts diagram.

The nipple sits directly on top of the crank case, near the back end of the cylinder.

What is it for? Crankcase vent? or does it have something do with the oil injection?

I bought the thing for 200 bucks in pieces and am in the process of putting it back together, and need to know what to do with the nipple thing.

Thanks!

 

[Awk08]

it has to be the crankcase vent, on the kicker side ????
a hose should run from it across to the other side, up the frame to under the hood, to keep it from sucking any water

 

[slickerthanyou]

it has to be the crankcase vent, on the kicker side ????
a hose should run from it across to the other side, up the frame to under the hood, to keep it from sucking any water

^^^^^I'll second that one!!I:I

 

[Robert]

so it's an open vent tube? is there any possible way to run it to the air box?

 

[FASST37]

Yep thats it. The hose was still attached to the front of the quad. Just wanted to make sure it wasnt some kinda oil port that lubed the main bearings or something. Thanks for your replies!

 

[rarak69]

So i just looked at that nipple

Would you say this is a good spot to hook my pulse pump too?

Pulse pump is a mini fuel pump that runs off engine pulse's. I was gonna fab up something to the carb, but i never even noticed this. Generally people run pulse pumps to the valvecover on OHV motors.

Oh and this is for my shifter kart motor(uses a blaster motor) I got a big 8.5L fuel tank now and need this to feed the stock carb.

 

[sicivicdude]

No, this would not be a good place to hook a pulse pump up to. It is only a vent for the transmission and would not include any engine pulses.

To get the strongest pulse signals you really need to have a tap into the crankcase. That way it will be pressure during blowdown and vacuum during transfer.

The second best place to tap would probably be into the side of the cylinder between the reed assembly and the intake window. It would be pressure during transfer and vacuum during compression

The third best place to tap would be between the carb and reeds. Probably into the intake manifold itself. It would be vacuum during the compression but no pressure during the blowdown... It might be a strong enough pressure pulse to pump and would certainly be the least invasive of the options but if you try it and it doesn't work, you'd have a potential leak in your mainfold from then on.

 

[rarak69]

Crankcase would be the spot then, however these crankcases dont have much room, ill figure something out.

Thanks for the reply